Summary of Significant Accounting and Reporting Policies - Additional Information (Details) $ in Millions	1 Months Ended		3 Months Ended	12 Months Ended
	Apr. 25, 2023 USD ($) facility MW	Dec. 31, 2022 USD ($) facility MW	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2023 USD ($)
Accounting Policies [Line Items]
Restricted cash and cash equivalents, current		$ 1,840	$ 1,914
restricted cash related to margin cash collateral that is netted against derivative liabilities		1,541	1,590
Restricted cash related to margin cash collateral that is netted against derivative instruments		7
Customer deposits		560	583
Accrued construction-related expenditures		1,760	1,456
Structured Payables Program, Outstanding Accounts Payable		3,700	3,600
Subsequent Event
Accounting Policies [Line Items]
Unrecovered Storm Costs to be Recovered through an Interim Storm Restoration Charge				$ 1,500
Subsequent Event | Storm Restoration Costs
Accounting Policies [Line Items]
Regulatory Asset, Amortization Period				12 months
Florida Power & Light Company
Accounting Policies [Line Items]
Increase (Decrease) in under Energy Recovery			2,100
Natural Gas Mid-Course Correction, Value			1,000
Accrued storm restoration costs		618	328
Restricted cash and cash equivalents, current		33	42
Customer deposits		543	565
Accrued construction-related expenditures		$ 559	501
Florida Power & Light Company | Subsequent Event
Accounting Policies [Line Items]
Natural Gas Mid-Course Correction, Value	$ 379
Five wind generation facilities and three solar facilities located in multiple regions | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed | Subsequent Event
Accounting Policies [Line Items]
Number of wind generation facilities | facility	5
Number of solar generation facilities | facility	3
Generating capacity (MW) | MW	688
Five wind generation facilities and three solar facilities located in multiple regions | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | NEP | United States, Geographically Dispersed | Subsequent Event
Accounting Policies [Line Items]
Ownership percentage sold	100.00%
Five wind generation facilities and three solar facilities located in multiple regions | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed | Forecast
Accounting Policies [Line Items]
Purchase price					$ 566
Debt and Noncontrolling Interests, Amount	$ 307
Three wind facilities and one solar plus battery facility | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | United States, Geographically Dispersed
Accounting Policies [Line Items]
Number of facilities under construction | facility		2
Three wind facilities and one solar plus battery facility | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | NEP | United States, Geographically Dispersed
Accounting Policies [Line Items]
Ownership percentage sold		49.00%
Number of wind generation facilities | facility		3
Number of Solar Plus Battery Facilities | facility		1
Solar Plus Storage Facility Capacity | MW		65
Generating capacity (MW) | MW		1,437
Three wind facilities | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | NEP | United States, Midwest Region
Accounting Policies [Line Items]
Ownership percentage sold		100.00%
Number of wind generation facilities		3
Generating capacity (MW) | MW		347
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Subsidiaries of NextEra Energy Resources | NEP and Differential Membership
Accounting Policies [Line Items]
Customer deposits		$ 170
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | NextEra Energy Resources
Accounting Policies [Line Items]
Purchase price		805
Disposal Group, Including Discontinued Operation, Working Capital		8
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources
Accounting Policies [Line Items]
Contract with Customer, Liability, Revenue Recognized			81
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources | NEP
Accounting Policies [Line Items]
Customer deposits		69
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources | NEP and Differential Membership
Accounting Policies [Line Items]
Customer deposits		251
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Current other liabilities | Subsidiaries of NextEra Energy Resources | Differential Memberships
Accounting Policies [Line Items]
Customer deposits		101
Three wind generation facilities and one solar plus battery facility and three wind facilities | Disposed of by Sale [Member] | Accounts Payable
Accounting Policies [Line Items]
Accrued construction-related expenditures		$ 810	$ 707